8487740 has 24 divisors (see below), whose sum is σ = 18128880. Its totient is φ = 3337088.

The previous prime is 8487719. The next prime is 8487751. The reversal of 8487740 is 477848.

8487740 = 441² + 442² + ... + 480².

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8487694 and 8487703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2417 + ... + 4776.

It is an arithmetic number, because the mean of its divisors is an integer number (755370).

Almost surely, 2^8487740 is an apocalyptic number.

It is an amenable number.

8487740 is an abundant number, since it is smaller than the sum of its proper divisors (9641140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8487740 is a wasteful number, since it uses less digits than its factorization.

8487740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7261 (or 7259 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 8487740 is about 2913.3726160586. The cubic root of 8487740 is about 203.9845880962.

The spelling of 8487740 in words is "eight million, four hundred eighty-seven thousand, seven hundred forty".